Adjustable brake-head.



W. C. HEDGCOCK.

ADJUSTABLE BRAKE HEAD.

APPLICATION FILED'NOV. 2a. 1914.

1,140,035 Piltkiitffd May 18, 1915.

UNITED STATES PATENT OFFICE.

WILLIAM C. HEDGCOGK, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STEELFOUNDRIES, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

To al whom it may concern:

Be it known that I, VVILLIAM C. Hanccoon, a citizen of the UnitedStates, and resident of Chicago, in the county of Cook 11d State ofIllinois, have invented certain h iew and useful Improvements inAdjustable Brake-Heads, of which the following is a specification.

My invention relates to brakes and has particular reference to a novelbrake head mounted for angular adjustment on the end of a beam or bar.

It is common practice to employ a type of brake head which may beangularly adjusted and maintained in such position! A desirable functionof such a locking device is that the locking force shall be applied in adirection substantially parallel to the horizontal axis of the head.Preferably the arrangement is such that the locking force tends tomaintain theubearing surface and the head in close engagement on theface side of the head. Thus for the reason that the force in braking istransmitted through the brake shoe, the brake head, and to the beam atthat point, and inasmuch as the slightest deflection at that pointdetracts from the value of the beam as a Whole, this 1 point is animportant one.

80,, Furthermore, it is an object of this in- ,vention to provide asimple locking device ,Which shall include in combination therewithmeans for maintaining the head on the beam against lateral displacement.Such results are secured in the present head.

The invention will be more readily understood by reference to theaccompanying drawings wherein:

Figure 1 is a transverse vertical section through a brake headconstructed in accord ance With my invention; Fig. 2 is a section on theline 22 of Fig. 1, the sleeve or bearing member being removed.

Referring more particularly to the drawings it will be seen that thesleeve or bearing member 10, adapted to be secured to or integral with abrake beam, carries a brake head 11. The bearing is provided with anincomplete peripheral groove 12. Located in a recess 13 in the lowerportion of the head is a block 14, the upper end of which is seatedwithin the groove'12. The block is adapted to be inserted through anopening in the face of the head and be held in $6 the proper position bymeans of a bolt 15.

Specification of Letters Patent.

ADJUSTABLE BRAKE-HEAD.

Patented May 18, 1915.

Application filed November 28,1914. Serial No. 874,508.

A transverse key 16 passed through the to receive the bolt 15. A nut 21on the bolt,

when actuated serves to exert force on the spring and to force the sameagainst the surface of the sleeve 10. It will be seen that the forcetending to hold the head in angularly adjusted position is directed in aline substantially parallel to the horizontal axis of the head, and thatinasmuch as the braking force is applied to the face of the head, thenceto the sleeve and the beam, that the locking device will maintain thecontacting surfaces of the sleeve and head in constant engagement andthus eliminate possible deflection at that point. Furthermrlire, theholding means being resilient, a constant and sure locking engagement isassured. The same bolt which looks the-head also maintains the block 14in place and prevents the removal of the head from the beam.

Obviously certain modifications may be made in the construction shown,and such modifications as are within the scope of my claims I, considerWithin the spirit of my invention.

I claim:

1. In a device of the class described, the combination of a head havinga central aperture and provided with recesses communicating therewith, ablock, held in one recess, a spring mounted in another recess, and asingle means for actuating and holding both said block and said spring,substantially as described.

2. In a device of the class described, the

combination of a bearing having a groove,

a head mounted on said bearing, said head being provided with recesses,a block mounted in one recess and having a portion projecting into thegroove in said bearing, a

spring mounted in another recess, and a lbs groove in said bearing, saidhead having an internal groove, a leaf spring mounted in said head andexerting its force in a substantially horizontal line passing throughthe axis of the bearing, and a bolt for bolding said block and exertingforce on said spring, substantially as described.

WILLIAM (J. HEDGCOGK.

Witnesses J. F. LYNN, CHARLES R. Ron.

